<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>渲染图片案例</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    li {
      list-style: none;
    }

    .box {
      display: flex;
      flex-wrap: wrap;
      width: 540px;
      margin: 20px auto;
    }



    .box li {
      width: 100px;
      height: 100px;
      margin: 0 10px 10px 0;
    }

    .box li:nth-child(5n+1) {
      margin-right: 0;
    }

    .box li img {
      width: 100%;
      height: 100%;
      border: 2px solid #258DF2;
      border-radius: 10px 0 10px 0;
    }
  </style>
</head>

<body>
  <ul class="box">
    <script>
      let arr = [
        './images/1.webp',
        './images/2.webp',
        './images/3.webp',
        './images/4.webp',
        './images/5.webp',
        './images/6.webp',
        './images/7.webp',
        './images/8.webp',
        './images/9.webp',
        './images/10.webp',
        './images/11.webp',
        './images/12.webp',
        './images/13.webp',
        './images/14.webp',
        './images/15.webp',
        './images/16.webp',
        './images/17.webp',
        './images/18.webp',
        './images/19.webp',
        './images/20.webp'
      ]
      let num = prompt('请输入显示的英雄个数1~20之间：')
      for (let i = 0; i < num; i++) {
        document.write(`
          <li>
            <img src="${arr[i]}" alt="">
          </li>
        `)
      }
    </script>
  </ul>
</body>

</html>